Red Hat Security Advisory: libpng security update
The libpng packages contain a library of functions for creating and manipulating Portable Network Graphics (PNG) image format files. Security Fix(es): * libpng: libpng: Information disclosure and denial of service via integer truncation in simplified write API (CVE-2026-22801) * libpng: libpng: Denial of service and information disclosure via heap buffer over-read in png_image_finish_read (CVE-2026-22695) * libpng: LIBPNG has a heap buffer overflow in png_set_quantize (CVE-2026-25646) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
The libpng library in Red Hat Enterprise Linux 8 contains three security flaws: CVE-2026-22801 involves information disclosure and denial of service through integer truncation in the simplified write API; CVE-2026-22695 involves denial of service and information disclosure via a heap buffer over-read in the png_image_finish_read function; CVE-2026-25646 is a heap buffer overflow vulnerability in the png_set_quantize function. These vulnerabilities could allow attackers to cause denial of service or leak information. Red Hat has released updated libpng packages to fix these issues as detailed in advisory RHSA-2026:4728.
Potential Impact
These vulnerabilities can lead to denial of service conditions and information disclosure when processing PNG images using the affected libpng functions. The heap buffer overflow could potentially allow memory corruption. The overall security impact is rated as Important by Red Hat, indicating a high severity but no confirmed exploits in the wild have been reported.
Mitigation Recommendations
Red Hat has released updated libpng packages for Red Hat Enterprise Linux 8 to address these vulnerabilities. Users should apply the security update described in advisory RHSA-2026:4728 promptly. For detailed update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigations are specified by the vendor.
Red Hat Security Advisory: libpng security update
Description
The libpng packages contain a library of functions for creating and manipulating Portable Network Graphics (PNG) image format files. Security Fix(es): * libpng: libpng: Information disclosure and denial of service via integer truncation in simplified write API (CVE-2026-22801) * libpng: libpng: Denial of service and information disclosure via heap buffer over-read in png_image_finish_read (CVE-2026-22695) * libpng: LIBPNG has a heap buffer overflow in png_set_quantize (CVE-2026-25646) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The libpng library in Red Hat Enterprise Linux 8 contains three security flaws: CVE-2026-22801 involves information disclosure and denial of service through integer truncation in the simplified write API; CVE-2026-22695 involves denial of service and information disclosure via a heap buffer over-read in the png_image_finish_read function; CVE-2026-25646 is a heap buffer overflow vulnerability in the png_set_quantize function. These vulnerabilities could allow attackers to cause denial of service or leak information. Red Hat has released updated libpng packages to fix these issues as detailed in advisory RHSA-2026:4728.
Potential Impact
These vulnerabilities can lead to denial of service conditions and information disclosure when processing PNG images using the affected libpng functions. The heap buffer overflow could potentially allow memory corruption. The overall security impact is rated as Important by Red Hat, indicating a high severity but no confirmed exploits in the wild have been reported.
Mitigation Recommendations
Red Hat has released updated libpng packages for Red Hat Enterprise Linux 8 to address these vulnerabilities. Users should apply the security update described in advisory RHSA-2026:4728 promptly. For detailed update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigations are specified by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:4728
- Cve Count
- 3
- Additional Cves
- ["CVE-2026-22801","CVE-2026-25646"]
- Cvss Version
- null
Threat ID: 6a1f4e86e29bf47b5007e89f
Added to database: 06/02/2026, 21:43:34 UTC
Last enriched: 06/27/2026, 23:39:11 UTC
Last updated: 07/31/2026, 19:24:46 UTC
Views: 96
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